Earth-auger.



PATENTED SEPT. 15, 1903.

A. BUNTBNBAGH.

. EARTH AUGER. ARP'LIGATION FILED mm: 23, 1903'.

N0 MODEL.

ami/WM Patented September 15, 1963.

UNITED STATES PATENT OFFICE.

AUGUST BUNTENBAOH, OF LONDON, OREGON.

EARTH-AUG ER.

SPECIFICATION formingpart of Letters Patent N 0. 738,982, dated September 15, 1903.

Application filed June 23, 1903. Serial No. 162,755- (No model.)

' To all whom it may concern: I

Be it known that I, AUGUST BUNrENBAcH, a citizen of the United States, residing at London, county of Lane, State of Oregon, have invented an Improvement in Earth-Angers; and I hereby declare the following to be a full,

clear, and exact description of the same.

I companying drawings, in which Figure 1 is a side elevation of an earthauger embodying my invention. Fig. 2 is a longitudinal sectional view of the same. Fig.

3 is a cross-section on the line 00 0c of Fig. 1;

Arepresents a tapered auger with a sharp= ened salient spiral cutting edge 2 and terminating at the lower end in a screw-point. The auger is provided With a central longitudinal Water-chamber 3.

4 is the hollow shank, screwing into the upper end of the auger. An annular channel or funnel 5 is formed in the end of the auger around the shank and is in communication with chamber 3 through a series of inclined ports 6. V

7 represents a series of small ports disposed the length of the auger and opening outward from chamber 3 into the recesses of the spiral. These ports 7 are inclined backwardly from the direction of rotation of the auger, as indicated in Fig. 3, and enter chamber 3 more nearly tangential thereto. Obviously they are thus less likely to become clogged than if they extended radially.

In operation water is poured into chamber 3 either. through funnel 5 and ports 6 or through the hollow shank 4, whence it gradually escapes through the small lateral inclined ports 7 to soflen the earth and cause the loosened dirt to form a paste, whereby it may be more easily removed from the hole.

Having thus described my invention, what I claim, and desire tosecure' by Letters Patent, is

1. An earth-auger comprising a tapered body portion having a helical peripheral cutting edge, said body inclosing a chamber, the latter provided with one or more inlet-passages and with lateral tangential outlets.

2. As a new article of manufacture,an earthauger characterized by a centrallylocated Water-chamber, an inlet-passage and lateral,

backwardly-inclined outlet-ports.

3. The combination of a tapered auger having a central longitudinal chamber and a shank, an annular funnel surrounding said shank, ports formed in the solid portions of the auger connecting said funnel and chamber, and lateral discharge-ports.

In witness whereof I have hereunto set my hand. v

' AUGUST BUNTENBAOH.

Witnesses:

M. KIRSOH, V. MARTINEZ. 

